Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	[1]	Jun. 30, 2018	Jul. 01, 2017	[1]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance as of December 30, 2017				$ 13,917
Dividends paid to noncontrolling interests				(592)
Net income attributable to noncontrolling interests	$ 700	$ 200		916	$ 668
Other comprehensive income attributable to noncontrolling interests, net of tax:
Foreign currency translation				147
Balance as of June 30, 2018	$ 14,388			$ 14,388

[1] The Condensed Consolidated Statements of Income for the quarter and six months ended July 1, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.